I need the help from the wisest investors...

Over the course of the last month I have been educating myself. One key takeaway that I value has been "Criteria". Establish a criteria that you feel works for what you wish to accomplish and hold on to it for dear life. Don't sacrifice it and stick to it and you will create your own market regardless of what is happening everywhere else. I feel like I developed a pretty sound criteria for operating in the middle market. However, as a newbie, I don't have ANY capital to even think about investing based on my criteria. Do I sacrifice my criteria to get started?